Add additional installation method

Author: fabaff

README.rst

@@ -1,7 +1,7 @@
 python-glances-api
 ==================
 
-Python API for interacting with `Glances <https://nicolargo.github.io/glances/>`_.
+A Python client for interacting with `Glances <https://nicolargo.github.io/glances/>`_.
 
 This module is not official, developed, supported or endorsed by Glances.
 
@@ -14,6 +14,12 @@ The module is available from the `Python Package Index <https://pypi.python.org/
 
     $ pip3 install glances_api
 
+Or on a Fedora-based system.
+
+.. code:: bash
+
+    $ sudo dnf -y install python3-glances-api
+
 Usage
 -----